[src/trunk]: src/lib/libc/arch/m68k/sys We can shave off a register-register ...

[kleink <kleink%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/8bf06168cc98
branches:  trunk
changeset: 472577:8bf06168cc98
user:      kleink <kleink%NetBSD.org@localhost>
date:      Sun May 02 20:52:02 1999 +0000

description:
We can shave off a register-register move when using the SVR4 ABI: __errno()
will return its pointer result in a0.

diffstat:

 lib/libc/arch/m68k/sys/Ovfork.S    |  8 ++++++--
 lib/libc/arch/m68k/sys/__vfork14.S |  8 ++++++--
 lib/libc/arch/m68k/sys/cerror.S    |  6 ++++--
 lib/libc/arch/m68k/sys/ptrace.S    |  6 ++++--
 4 files changed, 20 insertions(+), 8 deletions(-)

diffs (118 lines):

diff -r af64b4867b66 -r 8bf06168cc98 lib/libc/arch/m68k/sys/Ovfork.S
--- a/lib/libc/arch/m68k/sys/Ovfork.S   Sun May 02 20:34:04 1999 +0000
+++ b/lib/libc/arch/m68k/sys/Ovfork.S   Sun May 02 20:52:02 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: Ovfork.S,v 1.8 1998/12/02 19:29:57 thorpej Exp $       */
+/*     $NetBSD: Ovfork.S,v 1.9 1999/05/02 20:52:02 kleink Exp $        */
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -43,7 +43,7 @@
 #if 0
        RCSID("from: @(#)Ovfork.s       5.1 (Berkeley) 5/12/90")
 #else
-       RCSID("$NetBSD: Ovfork.S,v 1.8 1998/12/02 19:29:57 thorpej Exp $")
+       RCSID("$NetBSD: Ovfork.S,v 1.9 1999/05/02 20:52:02 kleink Exp $")
 #endif
 #endif /* LIBC_SCCS and not lint */
 
@@ -87,8 +87,12 @@
 #else
        jbsr    _C_LABEL(__errno)
 #endif /* PIC */
+#ifdef __SVR4_ABI__
+       movl    sp@+,a0@
+#else
        movl    d0,a1
        movl    sp@+,a1@
+#endif /* __SVR4_ABI__ */
        movl    sp@+,a0
 #else
        .globl  _C_LABEL(errno)
diff -r af64b4867b66 -r 8bf06168cc98 lib/libc/arch/m68k/sys/__vfork14.S
--- a/lib/libc/arch/m68k/sys/__vfork14.S        Sun May 02 20:34:04 1999 +0000
+++ b/lib/libc/arch/m68k/sys/__vfork14.S        Sun May 02 20:52:02 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: __vfork14.S,v 1.3 1998/10/06 19:05:26 kleink Exp $     */
+/*     $NetBSD: __vfork14.S,v 1.4 1999/05/02 20:52:03 kleink Exp $     */
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -43,7 +43,7 @@
 #if 0
        RCSID("from: @(#)Ovfork.s       5.1 (Berkeley) 5/12/90")
 #else
-       RCSID("$NetBSD: __vfork14.S,v 1.3 1998/10/06 19:05:26 kleink Exp $")
+       RCSID("$NetBSD: __vfork14.S,v 1.4 1999/05/02 20:52:03 kleink Exp $")
 #endif
 #endif /* LIBC_SCCS and not lint */
 
@@ -84,8 +84,12 @@
 #else
        jbsr    _C_LABEL(__errno)
 #endif /* PIC */
+#ifdef __SVR4_ABI__
+       movl    sp@+,a0@
+#else
        movl    d0,a1
        movl    sp@+,a1@
+#endif
        movl    sp@+,a0
 #else
        .globl  _C_LABEL(errno)
diff -r af64b4867b66 -r 8bf06168cc98 lib/libc/arch/m68k/sys/cerror.S
--- a/lib/libc/arch/m68k/sys/cerror.S   Sun May 02 20:34:04 1999 +0000
+++ b/lib/libc/arch/m68k/sys/cerror.S   Sun May 02 20:52:02 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cerror.S,v 1.10 1999/04/29 15:37:21 kleink Exp $       */
+/*     $NetBSD: cerror.S,v 1.11 1999/05/02 20:52:03 kleink Exp $       */
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -43,7 +43,7 @@
 #if 0
        RCSID("from: @(#)cerror.s       5.1 (Berkeley) 5/12/90")
 #else
-       RCSID("$NetBSD: cerror.S,v 1.10 1999/04/29 15:37:21 kleink Exp $")
+       RCSID("$NetBSD: cerror.S,v 1.11 1999/05/02 20:52:03 kleink Exp $")
 #endif
 #endif /* LIBC_SCCS and not lint */
 
@@ -63,7 +63,9 @@
 #else
        jbsr    _C_LABEL(__errno)
 #endif
+#ifndef        __SVR4_ABI__
        movl    d0,a0
+#endif
        movl    sp@+,a0@
 #else
 #ifdef PIC
diff -r af64b4867b66 -r 8bf06168cc98 lib/libc/arch/m68k/sys/ptrace.S
--- a/lib/libc/arch/m68k/sys/ptrace.S   Sun May 02 20:34:04 1999 +0000
+++ b/lib/libc/arch/m68k/sys/ptrace.S   Sun May 02 20:52:02 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ptrace.S,v 1.6 1999/01/14 22:48:20 kleink Exp $        */
+/*     $NetBSD: ptrace.S,v 1.7 1999/05/02 20:52:03 kleink Exp $        */
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -43,7 +43,7 @@
 #if 0
        RCSID("from: @(#)ptrace.s       5.1 (Berkeley) 5/12/90")
 #else
-       RCSID("$NetBSD: ptrace.S,v 1.6 1999/01/14 22:48:20 kleink Exp $")
+       RCSID("$NetBSD: ptrace.S,v 1.7 1999/05/02 20:52:03 kleink Exp $")
 #endif
 #endif /* LIBC_SCCS and not lint */
 
@@ -63,7 +63,9 @@
 #else
        jbsr    _C_LABEL(__errno)
 #endif /* PIC */
+#ifndef        __SVR4_ABI__
        movl    d0,a0
+#endif
        clrl    a0@
 #else
 #ifdef PIC